Sunan Ibn Majah 671
سنن ابن ماجه#671SahihMughith bin Sumayi said:"I prayed the Subh with 'Abdullah bin Zubair in the darkness, and when he said the Taslim, I turned to Ibn 'Umar and said: 'What is this prayer?' He said: 'This is how we prayed with the Messenger of Allah and with Abu Bakr and 'Umar. When 'Umar was stabbed, 'Uthman delayed it until there was light
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Fouad Abd al-BaqiSahih
Shuaib Al ArnautSahih
Zubair Ali ZaiIsnaad Sahih
In-book reference: 2:5